qgsattributesformproperties.h

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/***************************************************************************
    qgsattributesformproperties.h
    ---------------------
    begin                : August 2017
    copyright            : (C) 2017 by David Signer
    email                : david at opengis dot ch
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSATTRIBUTESFORMPROPERTIES_H
#define QGSATTRIBUTESFORMPROPERTIES_H
 
// We don't want to expose this in the public API
#define SIP_NO_FILE
 
#include "ui_qgsattributesformproperties.h"
#include "qgis_gui.h"
#include "qgsaction.h"
#include "qgsattributesformmodel.h"
#include "qgsexpressioncontextgenerator.h"
#include "qgspropertycollection.h"
#include "qgssettingstree.h"
#include "qgssettingstreenode.h"
#include "qgsmessagebar.h"
 
#include <QMimeData>
#include <QPushButton>
#include <QWidget>
#include <QTreeView>
#include <QSpinBox>
#include <QDropEvent>
#include <QMessageBox>
#include <QFileDialog>
#include <QHBoxLayout>
#include <QFormLayout>
#include <QPlainTextEdit>
#include <QAction>
#include <QMenu>
#include <QClipboard>
 
class QgsAttributeFormContainerEdit;
class QgsAttributeTypeDialog;
class QgsAttributeWidgetEdit;
class QgsAttributesFormBaseView;
 
class GUI_EXPORT QgsAttributesFormProperties : public QWidget, public QgsExpressionContextGenerator, private Ui_QgsAttributesFormProperties
{
    Q_OBJECT
 
  public:
    static inline QgsSettingsTreeNode *sTreeAttributesForm = QgsSettingsTree::sTreeApp->createChildNode( QStringLiteral( "attributes-form" ) );
    static const QgsSettingsEntryBool *settingShowAliases;
 
    explicit QgsAttributesFormProperties( QgsVectorLayer *layer, QWidget *parent = nullptr );
 
    void init();
 
    void apply();
 
    void store();
 
    void loadRelations();
 
    void initAvailableWidgetsView();
 
    void initFormLayoutView();
 
    void initLayoutConfig();
    void initInitPython();
    void initSuppressCombo();
 
    void initAvailableWidgetsActions( const QList< QgsAction > actions );
 
    QgsExpressionContext createExpressionContext() const override;
 
  protected:
    void updateButtons();
 
    QgsVectorLayer *mLayer = nullptr;
 
    QgsAttributesFormBaseView *mAvailableWidgetsView = nullptr;
    QgsAttributesFormBaseView *mFormLayoutView = nullptr;
 
    QgsAttributeWidgetEdit *mAttributeWidgetEdit = nullptr;
    QgsAttributeTypeDialog *mAttributeTypeDialog = nullptr;
    QgsAttributeFormContainerEdit *mAttributeContainerEdit = nullptr;
    QLabel *mInfoTextWidget = nullptr;
 
  private slots:
    void addContainer();
    void removeTabOrGroupButton();
    void mEditorLayoutComboBox_currentIndexChanged( int index );
    void pbnSelectEditForm_clicked();
    void mTbInitCode_clicked();
    void toggleShowAliases( bool checked );
 
    void onInvertSelectionButtonClicked( bool checked );
 
    void loadAttributeSpecificEditor( QgsAttributesFormBaseView *emitter, QgsAttributesFormBaseView *receiver, QModelIndex &deselectedFormLayoutIndex );
    void onAttributeSelectionChanged( const QItemSelection &selected, const QItemSelection &deselected );
    void onFormLayoutSelectionChanged( const QItemSelection &selected, const QItemSelection &deselected );
 
    void onContextMenuRequested( QPoint );
 
    void updatedFields();
 
    void updateFilteredItems( const QString &filterText );
 
  private:
    void clearAttributeTypeFrame();
 
    void loadAttributeWidgetEdit();
 
    void storeAttributeWidgetEdit();
 
    void storeAttributeContainerEdit();
 
    void storeAttributeWidgetEdit( const QModelIndex &index );
    void storeAttributeContainerEdit( const QModelIndex &index );
 
    void loadAttributeTypeDialog();
    void loadAttributeTypeDialogFromConfiguration( const QgsAttributesFormData::FieldConfig &cfg );
    void storeAttributeTypeDialog();
 
    void loadAttributeContainerEdit();
 
    void loadInfoWidget( const QString &infoText );
 
    void copyWidgetConfiguration();
    void pasteWidgetConfiguration();
 
    QgsAttributesAvailableWidgetsModel *mAvailableWidgetsModel;
    QgsAttributesFormLayoutModel *mFormLayoutModel;
    QgsAttributesFormProxyModel *mAvailableWidgetsProxyModel;
    QgsAttributesFormProxyModel *mFormLayoutProxyModel;
 
    QgsMessageBar *mMessageBar = nullptr;
 
    Qgis::AttributeFormPythonInitCodeSource mInitCodeSource = Qgis::AttributeFormPythonInitCodeSource::NoSource;
    QString mInitFunction;
    QString mInitFilePath;
    QString mInitCode;
    int mBlockUpdates = 0;
 
    QMenu *mAvailableWidgetsContextMenu = nullptr;
    QAction *mActionCopyWidgetConfiguration = nullptr;
    QAction *mActionPasteWidgetConfiguration = nullptr;
 
    friend class TestQgsAttributesFormProperties;
};
 
 
class GUI_EXPORT QgsAttributesFormBaseView : public QTreeView, protected QgsExpressionContextGenerator
{
    Q_OBJECT
 
  public:
    explicit QgsAttributesFormBaseView( QgsVectorLayer *layer, QWidget *parent = nullptr );
 
    QModelIndex firstSelectedIndex() const;
 
    // QgsExpressionContextGenerator interface
    QgsExpressionContext createExpressionContext() const override;
 
  public slots:
    void selectFirstMatchingItem( const QgsAttributesFormData::AttributesFormItemType &itemType, const QString &itemId );
 
    void setFilterText( const QString &text );
 
  protected:
    QgsVectorLayer *mLayer = nullptr;
    QgsAttributesFormProxyModel *mModel = nullptr;
};
 
 
class GUI_EXPORT QgsAttributesAvailableWidgetsView : public QgsAttributesFormBaseView
{
    Q_OBJECT
 
  public:
    explicit QgsAttributesAvailableWidgetsView( QgsVectorLayer *layer, QWidget *parent = nullptr );
 
    void setModel( QAbstractItemModel *model ) override;
 
    QgsAttributesAvailableWidgetsModel *availableWidgetsModel() const;
};
 
 
class GUI_EXPORT QgsAttributesFormLayoutView : public QgsAttributesFormBaseView
{
    Q_OBJECT
 
  public:
    explicit QgsAttributesFormLayoutView( QgsVectorLayer *layer, QWidget *parent = nullptr );
 
    void setModel( QAbstractItemModel *model ) override;
 
  protected:
    // Drag and drop support (to handle internal moves)
    void dragEnterEvent( QDragEnterEvent *event ) override;
    void dragMoveEvent( QDragMoveEvent *event ) override;
    void dropEvent( QDropEvent *event ) override;
 
  private slots:
    void onItemDoubleClicked( const QModelIndex &index );
    void handleExternalDroppedItem( QModelIndex &index );
    void handleInternalDroppedItem( QModelIndex &index );
};
 
#endif // QGSATTRIBUTESFORMPROPERTIES_H